Electricity Lesson 1Electricity Lesson 1

Forces and Electrical ChargesForces and Electrical Charges

A. Everything is made up of atoms. A. Everything is made up of atoms. An atom is made up of protons, An atom is made up of protons,

neutrons, and electrons. Protons neutrons, and electrons. Protons have a positive (+) charge, electrons have a positive (+) charge, electrons

have a negative (-) charge, and have a negative (-) charge, and neutrons have no charge.neutrons have no charge.

B. Atoms can gain or lose electrons. Extra electrons B. Atoms can gain or lose electrons. Extra electrons give the atom or object a negative charge. Losing give the atom or object a negative charge. Losing electrons make the object have more protons than electrons make the object have more protons than

electrons so it has a positive charge.electrons so it has a positive charge.

C. Objects can be charged by C. Objects can be charged by rubbing them together.rubbing them together.

D. Objects with like charges repel D. Objects with like charges repel each other, while objects with each other, while objects with

opposite charges attract each other.opposite charges attract each other.

E. Static means staying in one E. Static means staying in one place, not moving.place, not moving.

F. F. Static ElectricityStatic Electricity is a build up of is a build up of electrons of a substance, making a electrons of a substance, making a

negative charge.negative charge.